
Calamus
- County:
- Clinton County
- County Seat:
- No
- Area (mi²):
- 0.493
- State:
- Iowa
Calamus is a city located in Clinton County, Iowa. Calamus has a 2025 population of 347. Calamus is currently declining at a rate of -0.29% annually and its population has decreased by -1.98% since the most recent census, which recorded a population of 354 in 2020.
The average household income in Calamus is $73,038 with a poverty rate of 3.56%. The median age in Calamus is 41.1 years: 39.3 years for males, and 41.7 years for females.